Method of manufacturing a cylindrical supporting member for electrophotography
AssigneeFuji Electric Co., Ltd.
InventorsNoriaki Kawata, Kiyoshi Hikima
Life of this patent
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Abstract
An organic photosensitive member for electrophotography is formed of a cylindrical supporting member and an organic photosensitive layer on an outer surface of the supporting member. The supporting member is formed of a material of 10.sup.4 ohm.cm in volume resistivity containing a cross-linking type polyphenylenesulfide resin as a main component, and a highly conductive carbon black of 10.sup.-1 ohm.cm or less in volume resistivity. Thus, the supporting member has a light weight with good productivity and good chemical and thermal resistance. The supporting member can be made with dimensional accuracy despite its thin and long shape, and also has a uniform surface roughness, stable surface quality and good adhesion.
Claims7
A method of manufacturing a cylindrical supporting member, comprising,
- preparing a material of 10.sup.4 ohm.cm or lower in volume resistivity by blending a cross-linking polyphenylenesulfide resin as a main component, an amount of said cross-linking polyphenylenesulfide resin being at least 40 wt % to provide dimensional accuracy;
- a highly conductive carbon black of 10.sup.-1 ohm.cm or less in volume resistivity, an amount of said carbon black being less than 20 wt % and an average particle diameter of said carbon black being 20 to 50 nm;
- and a carbon black dispersant in an amount of 10-30 wt %. said carbon black dispersant being selected from a group consisting of calcium carbonate and clay, and
- injecting the material into a metal mold for a cylindrical supporting member.
Dependencies are inferred from the claim text.